You move a refrigerator into a room. The door of the fridge is left opened, but the door and the windows of the room are all closed. The fridge is powered on. One hour later you enter the room. Will the room be cooler or warmer?
Some of you have studied thermodynamics in school. The Second Law of Thermodynamics dictates that, in the thought experiment just mentioned, the room will be warmer. The refrigerator cannot take away more heat than it generates.
Air-conditioner works in the same principle as a fridge, except that the heat is channeled out of the room. So, while the room is cooled, the earth gets warmer each day (assuming that the earth cannot dissipate heat fast enough).
Unfortunately, air-conditioner, like air travel, is “necessary evil”. Lee Kuan Yew, former prime minister of
Still, there is something we can do. Refer to my other post – Cool Biz – for more details.
Somehow, Asians are so ‘smart’ that they have devised ways to cheat the energy saving system, e.g. by inserting a piece of paper into the main switch. Thus, they could leave the air-conditioners on when nobody is in the room.
For the sake of our Mother Earth, please do not do so…
Beyond Earth Hour
Air Travel & Global Warming